Sandhill Company Inc. had a beginning inventory of 110 units of Product RST at a cost of $7 per unit. During the year, purchases were: Sandhill Company uses a periodic inventory system. Sales totaled 1,520 units. (a) Determine the cost of goods available for sale. The cost of goods available for sale $ Calculate weighted-average cost per unit. (Round answer to 3 decimal places, es 5.125.) The cost of goods available for sale Calculate weighted-average cost per unit. (Round answer to 3 decimal places, eg. 5.125.) Weighted-average cost per unit Attempts: 0 of 1 used (b) The parts of this question must be completed in order. This part will be avallable when you complete the part above